package com.example.test1.Interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest,
                             HttpServletResponse httpServletResponse,
                             Object o) throws Exception {
        String reqPath = httpServletRequest.getServletPath();
        // 只有返回true才会继续向下执行，返回false取消当前请求
        HttpSession session = httpServletRequest.getSession();
        if (session == null || session.getAttribute("user") == null) {
            //log.trace("access#{},not logged in, return",reqPath);
            httpServletResponse.sendRedirect("/login");
            //httpServletResponse.setStatus(HttpStatus.UNAUTHORIZED.value());
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest,
                           HttpServletResponse httpServletResponse,
                           Object o, ModelAndView modelAndView) throws Exception {
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest,
                                HttpServletResponse httpServletResponse,
                                Object o, Exception e) throws Exception {

    }
}